Fireworks bomb structure and manufacturing method thereof

ABSTRACT

The invention relates to a fireworks bomb structure and manufacturing method thereof comprising a cover combining with an upper shell and an lower shell to form a filing chamber for accommodating effect fire powder, a sealing body combining with a base and the lower shell to form a propulsive chamber for accommodating launch powder which is interconnected to the filing chamber, and a long internal fuse with powder at both ends respectively extending to the filing chamber and propulsive chamber; thus the present invention provides a modular combination for easily filling the launch powder and effect fire powder respectively into the chambers by reversing a mold, achieving effects of timed detonation, manufacturing convenient and target accuracy.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to a fireworks bomb structure and manufacturingmethod thereof, particularly to a modular fireworks bomb structure.

2. Description of the Related Art

FIG. 1 is a schematic view of a conventional fireworks bomb structure.The fireworks bomb structure 10 comprises a sphere 11 with effect firepowder therein, a first fuse and second fuse 12A, 12B respectivelyprotruded on two sides of the sphere 11 for both ends thereofrespectively located at inside and outside of the sphere 11, a canisterlauncher 13 having launch powder 14 at a bottom layer thereof forleading the first fuse 12A into the launch powder 14 and a fuse hole131, a third fuse 15 extended through the fuse hole 131 to the launchpowder 14 and a fourth fuse 16 having an end connected to the secondfuse 12B and another end leading into the launch powder 14. Theaforesaid features are disclosed in CN Patent No. 201110741Y belongs toYONGFENG Firework MAG CO LTD.

FIG. 2 is an application example of the fireworks bomb structure 10.After igniting the first fuse 15, the launch powder 14 undergoeschemical changes to produce an upward physical force for the fireworksbomb structure 10 and then the first fuse 12A and fourth fuse 16 areignited. While the fireworks bomb structure 10 is launched into the air,the first fuse 12A continues to burn; meanwhile, the second fuse 12Bbegins to burn for detonating the sphere 11. Thus, the effect firepowder in the sphere 11 shows the fireworks effect, but the fireworksbomb structure 10 has the following disadvantages:

1. The preset length and burning time of the first and second fuses 12A,12B are difficult to mutually cooperate so the predetermined detonationtime of the sphere 11 is hard to control.

2. The first and second fuses 12A, 12B are respectively assembled andthe effect fire powder of the canister launcher 13 and the launch powder14 are not in the same structure so the manufacturing method of thefireworks bomb structure is complicated.

3. The upward physical force of the sphere 11 reduces the resistance ofthe fluid, but that the gravity center is located in the center of thesphere is easy to produce the rotational force. As a result, when theflow speed of the fluid speeds up, the transmit path of the sphere iseasily deflected.

Therefore, the present invention is provided to solve the aboveproblems.

SUMMARY OF THE INVENTION

It is a primary object of the present invention to provide a fireworksbomb structure and manufacturing method thereof having launch powder andeffect fire powder arranged in different chambers which areinterconnected for predicting the detonated time by the combustionspacing between the chambers and to easily fill the launch powder andeffect fire powder respectively into the chambers by reversing the mold,achieving timed detonation and manufacturing convenient effects.

It is another object of the present invention to provide a fireworksbomb structure and manufacturing method thereof for strengthening thegravity center thereof, reducing the transmit path deflectionprobability thereof.

In order to achieve the above objects, the present invention includes alower shell being a semicircular body with an upward opening and havingan annular concave portion at an upper periphery thereof, an lowerannular groove at an external periphery thereof and a long hollow tubeat a bottom thereof; a long internal fuse having powder at both endsthereof and inserted into the long hollow tube for a top end thereof anda bottom end thereof respectively projecting at an upper end and a lowerend of the long hollow tube; a base being a hollow circular body, anupper periphery thereof corresponding to the lower annular groove havingan annular flange expanded from the inside out for engaging the basewith the lower shell and the base having a first fuse hole at a bottomperiphery thereof; an upper shell being a semicircular body with adownward opening, a lower periphery thereof corresponding to the annularconcave portion having an annular flange portion for engaging the uppershell with the lower shell to form a ball-shaped casing and the uppershell having a filing hole thereon; a cover sealing the filing hole andcombining with the upper shell and the lower shell to form a filingchamber for accommodating effect fire powder; an external fuse fixedinto the first fuse hole for an end thereof being in the base andanother end thereof being outside the base; and a sealing body sealing abottom of the base and combining with the base and the lower shell toform a propulsive chamber for accommodating launch powder.

Based on the features disclosed, the cover a rounded body has a handleportion at an upper surface thereof; a lower surface thereofcorresponding to the filling hole has a sealing portion and an upperannular groove is arranged between an external periphery of the fillinghole and an external periphery of the upper shell for inserting thecover. Further, the handle portion of the cover may have a second fusehole. The present invention may further comprise a canister launcherbeing a hollow cylinder body for placing the fireworks bomb structure.

A manufacturing method of the fireworks bomb structure comprises thesteps of:

a) providing a lower shell being a semicircular body with an upwardopening and having an annular concave portion at an upper peripherythereof, an lower annular groove at an external periphery thereof and along hollow tube at a bottom thereof;

b) providing a long internal fuse inserted into the long hollow tube fora top end thereof and a bottom end thereof respectively projecting at anupper end and a lower end of the long hollow tube, mixing toluenesolvent, rubber powder and silt to coat on a gap between the internalfuse and the hollow tube for fixing the internal fuse to the hollow tubeand then coating powder at both ends of the internal fuse;

c) providing a hollow circular base having an annular flange expandedfrom the inside at an upper periphery thereof and a first fuse hole at abottom periphery thereof and then mixing toluene, banana oil and lacquerthinner to coat on a gap between the annular flange and the lowerannular groove for combining the annular flange and the lower annulargroove and further for engaging the base with the lower shell;

d) providing an upper shell being a semicircular body with a downwardopening and having filing hole thereon and a lower periphery thereofcorresponding to the annular concave portion having an annular flangeportion for the upper shell engaging with the lower shell to form aball-shaped casing;

e) providing a first mold with a plurality of first through holes and asecond mold with a plurality of second through holes respectivelyarranged at a bottom of the base and a top of the ball-shaped casing,respectively aligning centerlines of the first through hole and thesecond through hole with centerlines of the base and the ball-shapedcasing to combine the first mold with the second mold for fixing thebase and the ball-shaped casing respectively in the first through holeand second through hole, utilizing a quantitative hole of a quantitativeboard aligning with the filling hole to fill effect fire powder into theball-shaped casing and then coating toluene on a gap between the coverand the filling hole to seal the filling hole and thus the upper shell,the lower shell and the cover combines together to form a filing chamberfor accommodating the effect fire powder;

f) providing a fixed board matched with the rounded cover and combiningwith the first mold to fix the base and the ball-shaped casing,inverting the first mold and second mold for the opening of the basebeing upward, loading launch powder in the base through the quantitativehole of the quantitative board, removing the second mold and the fixedboard and then fixing the external fuse into the first fuse hole for anend thereof being in the base and another end thereof being outside thebase; and

g) providing a sealing body sealing the opening of the base andcombining the base and the lower shell to form a propulsive chamber foraccommodating the launch powder.

Based on the technical features disclosed, the present inventionprovides a filling chamber interconnected with a propulsive chamber forrespectively arranging effect fire powder and launch powder and aninternal fuse with powder at both ends arranged between the fillingchamber and propulsive chamber; thus, the detonated time can bepredicted by the combustion spacing of the internal fuse. Moreover, bothfilling chamber and propulsive chamber are integrally molded and thefireworks bomb structure can be upside down to place the launch powderand effect fire powder by a first and second mold. Meanwhile, thepropulsive chamber is able to strengthen the gravity center of thefilling chamber. Therefore, the present invention provides timeddetonation function and manufacturing convenient effect and reduces thetransmit path deflection probability thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a conventional fireworks bomb structure;

FIG. 2 is a schematic view of a transmit path deflection of theconventional fireworks bomb structure;

FIG. 3 is a perspective view of the present invention;

FIG. 4 is an exploded sectional view of the present invention;

FIG. 4A is a schematic view of the present invention, illustrating afirst mold and a second mold to be combined;

FIG. 4B is a schematic view of the present invention, illustrating thecombination of the first mold and second mold;

FIG. 4C is a schematic view of the present invention, illustrating thefilling of effect fire powder through a quantitative hole of aquantitative board;

FIG. 4D is a schematic view of the present invention, illustrating afixed board combined with the first mold;

FIG. 4E is a schematic view of the present invention, illustrating thefilling of launch powder through a quantitative hole of a quantitativeboard;

FIG. 4F is a schematic view of the present invention, illustrating theremoving of the second mold;

FIG. 5 is a schematic view of the assembly of the present invention;

FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. 5;

FIG. 7 is an application example of the present invention combining witha canister launcher;

FIG. 8 is a schematic view of the present invention, illustrating thelaunch powder being ignited by powder at a bottom end of an internalfuse; and

FIG. 9 is a schematic view of the present invention, illustrating effectfire powder being ignited by powder at a top end of the internal fuse.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

With the referenced to FIGS. 3 through 9, the embodiment of a fireworksbomb structure in accordance with the present invention comprises alower shell 21 being a semicircular body with an upward opening andhaving an annular concave portion 211 at an upper periphery thereof, anlower annular groove 212 at an external periphery thereof and a longhollow tube 213 at a bottom thereof; a long internal fuse 22 havingpowder 221 at both ends thereof and inserted into the long hollow tube213 for a top end thereof and a bottom end thereof respectivelyprojecting at an upper end and a lower end of the long hollow tube 213;a base 23 being a hollow circular body, an upper periphery thereofcorresponding to the lower annular groove 212 having an annular flange231 expanded from the inside out for engaging the base 23 with the lowershell 21 and the base 23 having a first fuse hole 232 at a bottomperiphery thereof; an upper shell 24 being a semicircular body with adownward opening, a lower periphery thereof corresponding to the annularconcave portion 211 having an annular flange portion 241 for engagingthe upper shell 24 with the lower shell 21 to form a ball-shaped casing25 and the upper shell 24 having a filing hole 242 thereon; a cover 26sealing the filing hole 242 and combining with the upper shell 24 andthe lower shell 21 to form a filing chamber 27A for accommodating effectfire powder 60; an external fuse 28 fixed into the first fuse hole 232for an end thereof being in the base 23 and another end thereof beingoutside the base 23; and a sealing body 29 sealing a bottom of the base23 and combining with, the base 23 and the lower shell 21 to form apropulsive chamber 27B for accommodating launch powder 80.

In the embodiment, the cover 26 a rounded body has a handle portion 261at an upper surface thereof; a lower surface thereof corresponding tothe filling hole 242 has a sealing portion 262 and an upper annulargroove 243 is arranged between an external periphery of the filling hole242 and an external periphery of the upper shell 24 for inserting thecover 26. Further, the handle portion 261 of the cover 26 has a secondfuse hole 263.

Based on the features disclosed, a manufacturing method of the fireworksbomb structure comprising the steps of:

a) providing a lower shell 21 being a semicircular body with an upwardopening and having an annular concave portion 211 at an upper peripherythereof, an lower annular groove 212 at an external periphery thereofand a long hollow tube 213 at a bottom thereof;

b) providing a long internal fuse 22 inserted into the long hollow tube213 for a top end thereof and a bottom end thereof respectivelyprojecting at an upper end and a lower end of the long hollow tube 213,mixing toluene solvent, rubber powder and silt to coat on a gap betweenthe internal fuse 22 and the hollow tube 213 for fixing the internalfuse 22 to the hollow tube 213 and then coating powder 221 at both endsof the internal fuse 22;

c) providing a hollow circular base 23 having an annular flange 231expanded from the inside at an upper periphery thereof and a first fusehole 232 at a bottom periphery thereof and then mixing toluene, bananaoil and lacquer thinner to coat on a gap between the annular flange 231and the lower annular groove 212 for combining the annular flange 231and the lower annular groove 212 and further for engaging the base 23with the lower shell 21;

d) providing an upper shell 24 being a semicircular body with a downwardopening and having filing hole 242 thereon and a lower periphery thereofcorresponding to the annular concave portion 211 having an annularflange portion 241 for the upper shell 24 engaging with the lower shell21 to form a ball-shaped casing 25;

Step e) is shown in FIGS. 4A to 4C, providing a first mold 30 with aplurality of first through holes 31 and a second mold 40 with aplurality of second through holes 41 respectively arranged at a bottomof the base 23 and a top of the ball-shaped casing 25, respectivelyaligning centerlines of the first through hole 31 and the second throughhole 41 with centerlines of the base 23 and the ball-shaped casing 25 tocombine the first mold 30 with the second mold 40 for fixing the base 23and the ball-shaped casing 25 respectively in the first through hole 31and second through hole 41, utilizing a quantitative hole 51 of aquantitative board 50 aligning with the filling hole 242 to fill effectfire powder 60 into the ball-shaped casing 25 and then coating tolueneon a gap between the cover 26 and the filling hole 242 to seal thefilling hole 242 and thus the upper shell 24, the lower shell 21 and thecover 26 combines together to form a filing chamber 27A foraccommodating the effect fire powder 60;

Step f) is shown in FIGS. 4D to 4F, f) providing a fixed board 70matched with the rounded cover 26 and combining with the first mold 30to fix the base 23 and the ball-shaped casing 25, inverting the firstmold 30 and second mold 40 for the opening of the base 23 being upward,loading launch powder 80 in the base 23 through the quantitative hole 51of the quantitative board 50, removing the second mold 40 and the fixedboard 70 and then fixing the external fuse 28 into the first fuse hole232 for an end thereof being in the base 23 and another end thereofbeing outside the base 23; and

g) providing a sealing body 29 sealing the opening of the base 23 andcombining the base 23 and the lower shell 21 to form a propulsivechamber 27B for accommodating the launch powder 80.

With the references to FIGS. 5 and 6, the fireworks bomb structure 20accomplished by the steps a) to f) of a manufacturing method providesthe filling chamber 27A and propulsion chamber 27B combined together toform a integrally molding and the internal fuse 22 with powder 221 atboth ends respectively contacted with the effect fire powder 60 andlaunch powder 80. Moreover, the propulsive chamber 27B strengthens thegravity center of the tilling chamber 27A. In the embodiment, thefireworks bomb structure 20 may be made of plastic materials but it isnot a limitation.

With the referenced to FIGS. 7 to 9, the present invention furthercomprises a canister launcher 90 being a hollow cylinder body forplacing the fireworks bomb structure 20. When igniting the external fuse28 extended through the second fuse hole 263 to a predetermined locationwhich is outside of the canister launcher 90, the launch powder 80 inthe propulsive chamber 27B is burned to ignite the powder 221 at thebottom end of the internal fuse 22 for the fireworks bomb structure 20instantly injecting out of the canister launcher 90 and continually toburn the powder 221 at the top end of the internal fuse 22 in order todetonate the effect fire powder 60 to a predetermined range.

Therefore, the present invention is to predict the time point of thedetonation of the effect fire powder 60 through the length of theinternal fuse 22 and to strengthen the gravity center thereof for nothaving transmit path deflection caused by the rotation; in other words,the present invention can control the timing for detonating the effectfire powder 60 to the predetermined range. Moreover, the design of thefireworks bomb structure provides convenient manufacturing method andincreases safety.

Although particular embodiments of the invention have been described indetail for purposes of illustration, various modifications andenhancements may be made without departing from the spirit and scope ofthe invention. Accordingly, the invention is not to be limited except asby the appended claims.

What is claimed is:
 1. A fireworks bomb structure, comprising: a lowershell being a semicircular body with an upward opening and having anannular concave portion at an upper periphery thereof, an lower annulargroove at an external periphery thereof and a long hollow tube at abottom thereof; a long internal fuse having powder at both ends thereofand inserted into the long hollow tube for a top end thereof and abottom end thereof respectively projecting at an upper end and a lowerend of the long hollow tube; a base being a hollow circular body, anupper periphery thereof corresponding to the lower annular groove havingan annular flange expanded from the inside out for engaging the basewith the lower shell and the base having a first fuse hole at a bottomperiphery thereof; an upper shell being a semicircular body with adownward opening, a lower periphery thereof corresponding to the annularconcave portion having an annular flange portion for engaging the uppershell with the lower shell to form a ball-shaped casing and the uppershell having a filing hole thereon; a cover sealing the filing hole andcombining with the upper shell and the lower shell to form a filingchamber for accommodating effect fire powder; an external fuse fixedinto the first fuse hole for an end thereof being in the base andanother end thereof being outside the base; and a sealing body sealing abottom of the base and combining with the base and the lower shell toform a propulsive chamber for accommodating launch powder.
 2. Thefireworks bomb structure thereof as claimed in claim 1, wherein thecover a rounded body has a handle portion at an upper surface thereof; alower surface thereof corresponding to the filling hole has a sealingportion and an upper annular groove is arranged between an externalperiphery of the filling hole and an external periphery of the uppershell for inserting the cover.
 3. The fireworks bomb structure asclaimed in claim 2, wherein the handle portion of the cover has a secondfuse hole.
 4. The fireworks bomb structure as claimed in claim 3,further comprising a canister launcher being a hollow cylinder body forplacing the fireworks bomb structure.
 5. A manufacturing method of thefireworks bomb structure as claimed in claim 1, comprising the steps of:a) providing a lower shell being a semicircular body with an upwardopening and having an annular concave portion at an upper peripherythereof, an lower annular groove at an external periphery thereof and along hollow tube at a bottom thereof; b) providing a long internal fuseinserted into the long hollow tube for a top end thereof and a bottomend thereof respectively projecting at an upper end and a lower end ofthe long hollow tube, mixing toluene solvent, rubber powder and silt tocoat on a gap between the internal fuse and the hollow tube for fixingthe internal fuse to the hollow tube and then coating powder at bothends of the internal fuse; c) providing a hollow circular base having anannular flange expanded from the inside at an upper periphery thereofand a first fuse hole at a bottom periphery thereof and then mixingtoluene, banana oil and lacquer thinner to coat on a gap between theannular flange and the lower annular groove for combining the annularflange and the lower annular groove and further for engaging the basewith the lower shell; d) providing an upper shell being a semicircularbody with a downward opening and having filing hole thereon and a lowerperiphery thereof corresponding to the annular concave portion having anannular flange portion for the upper shell engaging with the lower shellto form a ball-shaped casing; e) providing a first mold with a pluralityof first through holes and a second mold with a plurality of secondthrough holes respectively arranged at a bottom of the base and a top ofthe ball-shaped casing, respectively aligning centerlines of the firstthrough hole and the second through hole with centerlines of the baseand the ball-shaped casing to combine the first mold with the secondmold for fixing the base and the ball-shaped casing respectively in thefirst through hole and second through hole, utilizing a quantitativehole of a quantitative board aligning with the filling hole to filleffect fire powder into the ball-shaped casing and then coating tolueneon a gap between the cover and the filling hole to seal the filling holeand thus the upper shell, the lower shell and the cover combinestogether to form a filing chamber for accommodating the effect firepowder; f) providing a fixed board matched with the rounded cover andcombining with the first mold to fix the base and the ball-shapedcasing, inverting the first mold and second mold for the opening of thebase being upward, loading launch powder in the base through thequantitative hole of the quantitative board, removing the second moldand the fixed board and then fixing the external fuse into the firstfuse hole for an end thereof being in the base and another end thereofbeing outside the base; and g) providing a sealing body sealing theopening of the base and combining the base and the lower shell to form apropulsive chamber for accommodating the launch powder.